Suggestions by @castingsinmyblood

Hrothgar (Beowulf)

as Charlton Heston in What if this actor played

Highfather/Izaya

as Liam Neeson in What if this actor played

Beowulf

as Richard Harris in What if this actor played

Mojo (Marvel)

as Bill Hader in What if this actor played

Justin Hammer

as Peter Cushing in What if this actor played

Nero Wolfe

as Victor Buono in What if this actor played

Frankenstein’s Monster

as Laurence Olivier in What if this actor played

Victor Frankenstein

as Laurence Olivier in What if this actor played

Optimus Prime

as Idris Elba in What if this actor played

The Joker (Character)

as Christopher Lloyd in What if this actor played

Leonard McCoy

as Bryan Cranston in What if this actor played

Ratchet

as Bryan Cranston in What if this actor played

Unferth (Beowulf)

as Christopher Lloyd in What if this actor played

Henry F. Potter

as Charles Durning in What if this actor played

Stitch (X-626)

as Brother Theodore in What if this actor played

Grendel

as Elijah Wood in What if this actor played

Bruce Banner

as Anthony Perkins in What if this actor played

Victor Frankenstein

as Timothy Dalton in What if this actor played

Hrothgar (Beowulf)

as Joss Ackland in What if this actor played

King Lear

as Charlton Heston in What if this actor played